This image shows why the shapes in the cleft of the main cardioid are called elephants. With a little imagination, the two figures in the image look like elephants, facing to the right, with their trunks in the air.
If you have FractalWorks installed, you can create this plot yourself by clicking here: Fractalworks plot Elephants.
The plot is centered at -1.749480617366887, -0.0001461338189056449, with a real width of about 9.3E-12
The image posted here was cropped slightly before posting. Also, you'll need Fractalworks 0.4.4 in order to have the correct color file for this plot.
The elephants in this image are a closeup from the image "Dancing elephants".